There is no doing of that which is (already) done; also there is no death to the already dead; there is no sorrow for that which has passed - this is the opinion of those that are cognizant of the vedas.

Commentary:

Do not cry over spilt milk!

Once a task is done, there is no re-doing it. Once a seed sprouts, there is no re-sprouting for that seed. Once a child grows up, there is no re-growing for that child. Similarly, there is no death to the already dead. When these concepts are accepted, why not the fact that there is no sorrow for that which has already passed. When there is no option of un-doing or re-doing, what is the purpose of sulking in sorrow! Those that are aware of the vedas, clearly know and understand that this is an essence from the vedas directly. They accept the past as past and leave the sorrow behind as well.